Open throat box gluing machine



Sept. 28, 1954 A F. SHIELDS 2,690,156

l OPEN THROAT BOX GLUING MACHINE Filed May 25, 1951 4 Sheets-Sheet 2 INVENTOR ATTORNEYJ)` sept. 28, 1954 A. F SHIELDS 2,690,156

OPEN THROAT BOX GLUING MACHINE Filed May 25 1951 A 4 SheetS--Shee'l'I 5 TTORNEYS SePf- 23 1954 A. F. sHlELDs OPEN THROAT Box GLUING MACHINE 4 Sheets-Sheet 4 Filed May 25, 1951 FIG? INVENTOR. Lae/er/Ff/we-ay Patented Sept. 28, 1954 OPEN THROAT BOX GLUIN G MACHINE Albert F. Shields, Forest Hills, N. Y., assig'nor to S & S Corrugated Paper Machinery Co., Inc., Brooklyn, N. Y., a corporation of New York Application May 25, 1951, Serial No. 228,287

12 Claims.

My present invention relates to gluing machines and more particularly to devices for automatically gluing a flap of paper boxes, cartons, or the like.

My novel device will, after applying the glue, move sidewise to make possible the folding operation. My novel device is especially constructed so that it glues a flap from one end to the other.

The primary object of my invention, therefore, is the provision of novel gluing means `for boxes and cartons.

Another object of my invention is the arrangement of the gluing mechanism so that one side of the gluing area is completely free of apparatus, thereby permitting extremely wide Vcartons or boxes to protrude from that side and thus making it possible for the gluing machine to operate on a wide range of sizes.

A further object of my invention is the provision of means for automatically moving the glue applicator sidewise out of the path of carton panels which are to be folded following the gluing operation.

Another object of my invention is the provision of means for automatically moving the glue applicator from one end of the cartons or boxes tothe other.

These and many other objects and advantages of my invention will become apparent in the following description and drawings in which:

Figure 1 is an isometric schematic view of my novel gluing device shown ready for operation.

Figure 2 is an isometric view of my novel gluing device showing it immediately after operation to apply the glue strip.

Figure 3 is a side View of the glue applicator of Figure 1.

Figure 4 is a front View of the glue applicator of Figure 1.

- Figure 5 is a side view of the box showing the glued flap.

Figure 6 is a plan view of a portion of a carton or box showing the glued flap. l

Figure '7 is an isometric view of a modified gluing machine showing a change in switching apparatus.

Referring now to Figure 1, a control shaft 2 is rotated through gears 3 and -4 by the driving shaft I. Control shaft 2 carries a cam 5 at its upper end and a clutch 30 and is secured to the frame 6 through bearings I and 8. The cam follower 9 is biased toward the frame III bytension spring II. The cam follower 9 is rigidly secured to the folded carton or air cylinder I2 through a shaft I3 which can ro`` tate inside bearing I4 secured to frame 6.

2 The air cylinder I2 has a piston I5; the outer end of piston I5 carries the gluing apparatus I6 shown morein detail in Figures 3 and 4 made of the following main parts: a roller with serrations I6, a glue container I'I with housing I8 secured to piston I5, a glue flow regulating screw 5I which regulates clearance between serrated roll I6 and housing I8, through which the glue ows from container I'I to roller I6 and from there to the ap 20 of cartons or boxes tobe glued.

More particularly, housing I8 has two extensions 52 and 53 with aligned rectangular openings 55. Each opening 55 carries a closely tting rectangular shaft block 56. Blocks 56 are provided with a center bearing 51 in which shaft 60 of roller I6 can rotate. Blocks 56 are further provided with a recess 6I so shaped that when the end of regulating screw 5I is placed in the recess 6I and the surface of screw recess 6I is appropriately hammered, the end 65 of regulating screw 5I cannot disengage from the recess 6 I. This not only permits simultaneous movement of screw 5I and block -56 but will also keep roller I6 at a fixed relative position with respect to housing I8. The threaded part 56 of regulating screw 5I engages a threaded opening 61 of extension 52. It is now evident that by appropriate rotation of the two screws 5I, one at each side of roller I 6 block 56 and, therefore, roller I6 can be raised or lowered, thus regulating the clearance between roller I 6 and housing I8 and therefore also the flow of glue from container I1 to roller I6 and from roller I6 to flap 20 of cartons or boxes.

A pin 2I is secured to the upper surface of cam 5 in position to engage metallic ngers 22 and 23 secured to the frames I0 and 24, respectively. To the same frames I6 and 24 are secured two switches 25 and 26, respectively.

The position of switch 25 and finger 22 with respect to switch 26 and linger 23 can be regulated since switch 25 and finger 26 are movable along groove 50 of frame III. This regulable switch system makes possible the gluing of boxes and cartons having flaps of different length. A hand operated mechanism can move switch 25 and ringer 22 forward or backward along groove 56 according to the length of flap 20 of the box or carton to be glued.

Cam 5 performs two functions, namely, that of moving the glue aplicator I6 from an on position to an off position and vice versa, as well as that of closing and opening switches 25 and 25 controlling the air cylinder I2 by means of solenoid 29 and valve unit 2l.

As the pin 2I on the cam 5 strikes the metallic finger 23, it closes the switch so that the solenoid 29 is energized and opens the air intake valve in valve unit 2l'. The air goes into cylinder l2 and pushes piston I5 out of cylinder i2. This operation continues until pin 2| strikes metalliciinger 2i. of switch 25, opening switch Et and deenergizing solenoid 2Q. As solenoid E@ is deenergized, the exhaust Valve of valve unit 2l is open while the intake valve of valve unit 2'! is closed.

Clutch is is controlled by stop SI which is heid in position by arm 32 pivoted at 33 and tension spring Clutch il@ is preferably of the wellknown single revolution overrunning type which permits the gear s to rotate without driving control shaft 2 until the stop 3l is moved away from the clutch 3Q, whereupon the clutch. Bil rotates shaft 2 one complete revolution.

To prevent any back lash from developing when stop 3l is suddenly brought to bear against the clutch 3i? to stop its rotation, a notched disc 35s with pawl 3S is used. The pawl 36 is pivoted at 3l and held against disc 35 by spring 38 to prey vent reverse rotation of the shaft 2.

When the operator pushes foot pedal 39, solenoid iii is energized and pulls toward itself the armature M to which arm 32 is mechanically coupled. Arm 32 disengages clutch stop 3I from clutch permitting one complete rotation of 5 clutch 3G. Stop 3l thereupon re-engages the clutch 3d until the operator pushes again foot pedal 39.

When foot pedal 39 is down, cam 5 can rotate.

Pin 2| then first strikes the nger 23 closing the circuit of valve unit 27. Air enters through the air intake of valve 2'! and pushes the piston I5 of air cylinder ii?. out of air cylinder I2. As the piston i5 moves out, the gluing roller I6 rotates on the flap 12! of the box or carton leaving a coat or layer of glue on said flap 2li as shown in Figure 6.

When pin 2I strikes ringer 22, the circuit of solenoid 2S is opened and the air intake is closed while the air exhaust is open to let the air in cylinder I2 escape, permitting the piston I5 biased by `a tension spring to return to its original position.

At the same time that circuit of solenoid 29 is opened, cam 5 moves cam follower 9 to the position shown in Figure 2, moving the glue applicator i6 away from the flap 2li of the box or carton.

The box or carton is then folded by the operator who feeds the folded box or carton between rollers i2 which press flap 2@ of the box or carton to the other side of the box or carton while at the same time pulling away from the operator the folded box or carton.

A modied switching system is shown in Figure '7 as in the previous case, the valve unit solenoid 2l is energized when pin 2I strikes finger 23, but here the second switch 43 is placed at the outer end of the glue applicator i6 so that it opens the circuit of solenoid 2s when the glue applicator reaches the regulable stop M.

This arrangement makes possible the gluing of boxes and cartons having flaps of different lengths. A hand-operated mechanism can move the stop i4 forward or backward according to the length of flap 2li of the box or carton to be glued.

Although l2 have described a preferred manner for carrying out my invention, I am aware that modifications are entirely feasible in the physical construction thereof and accordingly I do not intend to be limited except as set forth in the following claims.

I claim:

l. A gluing machine for applying glue to a marginal nap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue; means for applying said glue; electro-mechanical means for cyclically initiating and terminating the operation of the machine and means for automatically' moving .said glue applying means in a path substantially transversely of said marginal iiap away from said marginal flap at the end of the glue applying operation.

2. A gluing machine for applying glue to the flap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue; an opening at the bottom of said container, a screw regulating the flow of the glue through said opening to grooves of a roller, said roller while moving applying said glue to the flap of said blanks; electro-mechanical means for cyclically initiating and terminating the operation of the machine; and means for automatically moving said glue applying means in a path substantially transversely of said marginal flap away from said marginal flap at the end of the glue applying operation.

3. A gluing machine for applying glue to the iiap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue; means for applying said glue; electro-mechanical means for cyclically initiating and terminating the operation of the machine comprising a cyclically moving member to bend a spring finger and initiate said operation, said moving member bending a second spring finger at the end of said operation to terminate said cycle; and means for automatically moving said glue applying means in a path substantially transversely of said marginal ap away from said marginal flap at the end of the glue applying operation.

4. A gluing machine for applying glue to the flap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine cornprising a container for glue; means for applying said glue; electro-mechanical means for cyclically initiating and terminating the operation of the machine comprising a cyclically moving member to bend a spring finger and initiate said cycle, said moving member bending a second spring finger at the end of said cycle to terminate said cycle; clutch means for starting and stopping said mechanisms; solenoid means for engaging and disengaging said clutch means; and electrical switch in circuit with said solenoid means; means wherey said solenoid means is energized, and means for automatically moving said glue applying means in a path substantially transv said marginal flap away from said marginal flap at the end of the glue applying operation.

5. A gluing machine for applying glue to the flap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue, an opening at the bottom of said container, a screw regulating the now of the glue through said opening to grooves of a roller applying said glue to the flap of said blanks; piston and cylinder means associated with said roller for moving said roller alongsaid ,flan'gvalve and valve solenoid means'starting and terminating said-movement, electro-mechanical means for cyclically initiating and vterminating the'operation of said piston; and means for automatically 'moving the piston and cylinder in a path substantially transversely of said marginal ilap away from said marginal flap at the end of the glue applying operation.

6. A gluing machine for applying glue to the iiap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue, an opening at the bottom of said container, a screw regulating the flow of the glue through said opening to grooves of a roller applying said glue to the flap of said blanks; piston and cylinder means associated with said roller for moving said roller along said iiap, valve and valve solenoid means starting and terminating said movement, electro-mechanical means for cyclically initiating and terminating the operation of said piston comprising a cyclically moving member to bend a spring finger and initiate said operation; said moving member bending a second spring linger at the end of said operation to terminate said cycle; said spring lingers operating electrical switches; said switches being the means whereby said valve solenoid is energized and deenergized; and means for automatically moving the piston and cylinder in a path substantially transversely of said marginal flap away from said marginal ap at the end of the glue applying operation.

'7. A gluing machine for applying glue to the ilap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue, an opening at the bottom of said container, a screw regulating the flow of the glue through said opening to grooves of a roller applying said glue to the flap of said blanks; piston and cylinder means associated with said roller for moving said roller along said ilap, valve and valve solenoid means starting and terminating said movement, electro-mechanical means for cyclically initiating and terminating the operation of said piston comprising a cyclically moving member to bend a spring iinger and initiate said operation; said moving member bending a second spring finger at the end of said operation to terminate said cycle; said spring fingers operating electrical switches; said switches being the means whereby said valve solenoid is energized and deenergized; a cam follower associated with said l cylinder and a cam associated with said cyclically moving member; means driving said cam follower to said cam; said cam moving said cam follower and associated cylinder away from said blanks at the end of said operation.

S. A ygluing machine for applying glue to the iiap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue; means for applying said glue; electro-mechanical means for cyclically initiating and terminating the operation of the machine comprising a cyclically moving member to bend a spring finger and initiate said cycle, said moving member bending a second spring i'lnger at the end of said cycle to terminate said cycle; the portion of said second spring nger in the path of said moving member being regulable; clutch means associated with the glue application for starting and stopping said mechanisms; solenoid means forV engaging and disengaging said clutch means; an electrical switch in circuit with said solenoid means; means whereby said solenoid means is energized; and means for automatically moving thepiston and cylinder in a path substantially transversely of said'marginal ap away from said marginal'ilap at `the end of the glue applying operation;

9. A gluing machine for applying glue to the flap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue, an opening at the bottom of said container, a screw regulating the ilow of the glue through said opening to grooves of a roller applying said glue to the flap of said blanks; piston and cylinder means associated with said roller for moving said roller along said flap, valve and valve solenoid means starting and terminating said movement, electro-mechanical means for cyclically initiating and terminating the operation of said piston; said electro-mechanical means comprising a cyclically moving member to bend a spring nger and initiate said cycle, and a second member on said container to hit a regulable stop on its path and terminate said cycle, and means for automatically moving the piston and cylinder in a path substantially transversely of said marginal flap away from said marginal flap at the end of the glue applying operation.

l0. A gluing machine for applying glue to the iiap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue, an opening at the bottom of said container, means regulating the iiow of the glue through said opening to grooves of a roller, said roller while moving applying said glue to the flap of said blanks; electro-mechanical means for cyclically initiating and terminating the operation of the machine, and means for automatically moving said roller in a path substantially transversely of said marginal flap and beyond said blank in a longitudinal direction clearing said blanks for folding.

l1. A gluing machine for applying glue to a marginal flap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue; means for applying said glue, hydraulic means for cyclically initiating and terminating the operation of the machine and means for automatically moving said glue applying means in a path substantially transversely of said marginal ap away from said marginal flap at the end of the glue applying operation.

l2. A gluing machine for applying glue to the ilap of blanks passed therethrough, said blank being substantially stationary during the operation of the gluing machine, said machine comprising a container for glue; an opening at the bottom of said container, a screw regulating the iiow of the glue through said opening to grooves of a roller, said roller while moving applying said glue to the flap of said blanks; pneumatic means for cyclically initiating and terminating the operation of the machine; and means for automatically moving said roller in a path substantially transversely of said marginal flap away from said marginal ilap at the end of the glue applying operation.

(References on following page) References Cited infthe @le of this ,patent lNumber UNITED STATES yPA'I'Ems g'g Numbeff 'Name Date 2,383,947 446,124 Rau Feb. 1o, 1891 5 45014.38 2,203,572 Johnson Juno 4, 1940 573097 2,230,451 Elliott Feb. 4, 1941 2,282,252 scott on o1 May 5, 1942 8 Name Date y.Janoskovits et a1. Sept. 29, 1942 Spencer Mar. 28, 1944 Wensel'etal Sept. 4, 1945 Miller oci-, 5, 1948 yEpstein Oct. 30, 1951 

